That's not the issue. The issue is that in the regions where you do have good public transit, most of the drivers are commuting from places that don't. So until

That's not the issue. The issue is that in the regions where you do have good public transit, most of the drivers are commuting from places that don't. So until those areas have at least decent access to public transit, you risk excluding people from those areas from economic opportunities in the city. So you still need a comprehensive public transit system. It doesn't need to be super regular or blazing fast but it needs to be viable enough that commuters can still commute if they can't get a license.